{"id":39780,"date":"2026-03-25T10:58:06","date_gmt":"2026-03-25T08:58:06","guid":{"rendered":"https:\/\/diagnozabam.ro\/sfaturi\/?p=39780"},"modified":"2026-03-25T10:58:06","modified_gmt":"2026-03-25T08:58:06","slug":"p0072-code-ambient-air-temperature-sensor-circuit-low","status":"publish","type":"post","link":"https:\/\/diagnozabam.ro\/sfaturi\/blog\/p0072-code-ambient-air-temperature-sensor-circuit-low\/","title":{"rendered":"P0072 Code \u2013 Ambient Air Temperature Sensor Circuit Low"},"content":{"rendered":"<p data-start=\"162\" data-end=\"335\">The <strong data-start=\"166\" data-end=\"205\">P0072 diagnostic trouble code (<a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/p0205-code-injector-circuit-malfunction-cylinder-5\/\">DTC<\/a>)<\/strong> indicates that the <strong data-start=\"225\" data-end=\"301\">ambient air temperature sensor circuit is reporting a <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/obd2-winter-codes-what-they-mean-and-why-they-appear\/\">low voltage<\/a> signal<\/strong> to the engine control unit (ECU).<\/p>\n<p data-start=\"337\" data-end=\"485\">The <strong data-start=\"341\" data-end=\"381\">ambient air temperature (AAT) sensor<\/strong> measures the outside air temperature and sends this information to the ECU. The ECU uses this data for:<\/p>\n<ul data-start=\"487\" data-end=\"609\">\n<li data-section-id=\"1con4yx\" data-start=\"487\" data-end=\"518\">\n<p data-start=\"489\" data-end=\"518\">engine management adjustments<\/p>\n<\/li>\n<li data-section-id=\"sm750s\" data-start=\"519\" data-end=\"549\">\n<p data-start=\"521\" data-end=\"549\"><a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/common-winter-car-starting-mistakes\/\">cold start<\/a> fuel calculations<\/p>\n<\/li>\n<li data-section-id=\"o1o0w1\" data-start=\"550\" data-end=\"577\">\n<p data-start=\"552\" data-end=\"577\">climate control operation<\/p>\n<\/li>\n<li data-section-id=\"179e9tm\" data-start=\"578\" data-end=\"609\">\n<p data-start=\"580\" data-end=\"609\"><a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/%e2%9a%a1-golf-7-dashboard-lights-up-like-a-christmas-tree\/\">dashboard<\/a> temperature display<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"611\" data-end=\"759\">If the ECU detects that the voltage from the ambient temperature sensor is <strong data-start=\"686\" data-end=\"719\">lower than the expected <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/electric-car-range-2026-real-conditions-explained\/\">range<\/a><\/strong>, it will store the <strong data-start=\"739\" data-end=\"758\">P0072 <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/p0229-code-throttle-pedal-position-sensor-c-intermittent\/\">OBD2<\/a> code<\/strong>.<\/p>\n<p data-start=\"761\" data-end=\"959\">A <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/obd2-winter-codes-what-they-mean-and-why-they-appear\/\">low voltage<\/a> signal usually indicates that the sensor is reporting <strong data-start=\"829\" data-end=\"860\">extremely <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/common-winter-car-starting-mistakes\/\">cold<\/a> temperatures<\/strong>, often around <strong data-start=\"875\" data-end=\"884\">-40\u00b0C<\/strong>, which is typically the default value when the sensor circuit has a fault.<\/p>\n<hr data-start=\"961\" data-end=\"964\" \/>\n<h2 data-section-id=\"1e1vova\" data-start=\"966\" data-end=\"991\">Symptoms of Code P0072<\/h2>\n<p data-start=\"993\" data-end=\"1058\">Common symptoms associated with the <strong data-start=\"1029\" data-end=\"1049\">P0072 error code<\/strong> include:<\/p>\n<ul data-start=\"1060\" data-end=\"1256\">\n<li data-section-id=\"1sagg70\" data-start=\"1060\" data-end=\"1092\">\n<p data-start=\"1062\" data-end=\"1092\"><a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/%e2%9a%99%ef%b8%8f-faulty-maf-sensor-symptoms-causes-fixes\/\">Check Engine<\/a> light illuminated<\/p>\n<\/li>\n<li data-section-id=\"6991vr\" data-start=\"1093\" data-end=\"1151\">\n<p data-start=\"1095\" data-end=\"1151\">Outside temperature display showing extremely low values<\/p>\n<\/li>\n<li data-section-id=\"u9sa0o\" data-start=\"1152\" data-end=\"1189\">\n<p data-start=\"1154\" data-end=\"1189\">Incorrect climate control operation<\/p>\n<\/li>\n<li data-section-id=\"4gwzhh\" data-start=\"1190\" data-end=\"1218\">\n<p data-start=\"1192\" data-end=\"1218\">Possible rough <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/common-winter-car-starting-mistakes\/\">cold<\/a> starts<\/p>\n<\/li>\n<li data-section-id=\"1c68nbj\" data-start=\"1219\" data-end=\"1256\">\n<p data-start=\"1221\" data-end=\"1256\">Slightly increased fuel consumption<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1258\" data-end=\"1374\">In many cases, <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/pc-freezes-randomly-causes-and-fix\/\">drivers<\/a> first notice the issue when the <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/%e2%9a%a1-golf-7-dashboard-lights-up-like-a-christmas-tree\/\">dashboard<\/a> shows <strong data-start=\"1329\" data-end=\"1373\">unrealistic outside temperature readings<\/strong>.<\/p>\n<hr data-start=\"1376\" data-end=\"1379\" \/>\n<h2 data-section-id=\"1qen2h2\" data-start=\"1381\" data-end=\"1406\">Common Causes of P0072<\/h2>\n<p data-start=\"1408\" data-end=\"1431\">Typical causes include:<\/p>\n<ul data-start=\"1433\" data-end=\"1655\">\n<li data-section-id=\"460x2b\" data-start=\"1433\" data-end=\"1476\">\n<p data-start=\"1435\" data-end=\"1476\">Faulty <strong data-start=\"1442\" data-end=\"1476\">ambient air temperature sensor<\/strong><\/p>\n<\/li>\n<li data-section-id=\"1c127hv\" data-start=\"1477\" data-end=\"1523\">\n<p data-start=\"1479\" data-end=\"1523\">Short circuit to ground in the sensor wiring<\/p>\n<\/li>\n<li data-section-id=\"14awvuj\" data-start=\"1524\" data-end=\"1548\">\n<p data-start=\"1526\" data-end=\"1548\">Damaged wiring harness<\/p>\n<\/li>\n<li data-section-id=\"vbb0ds\" data-start=\"1549\" data-end=\"1581\">\n<p data-start=\"1551\" data-end=\"1581\">Corroded electrical connectors<\/p>\n<\/li>\n<li data-section-id=\"12q94b9\" data-start=\"1582\" data-end=\"1625\">\n<p data-start=\"1584\" data-end=\"1625\">Sensor exposed to moisture or road debris<\/p>\n<\/li>\n<li data-section-id=\"1ezucro\" data-start=\"1626\" data-end=\"1655\">\n<p data-start=\"1628\" data-end=\"1655\">ECU signal reference issues<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1657\" data-end=\"1783\">Because the sensor is usually mounted <strong data-start=\"1695\" data-end=\"1732\">behind the front bumper or grille<\/strong>, it can easily be damaged by road debris or water.<\/p>\n<hr data-start=\"1785\" data-end=\"1788\" \/>\n<h2 data-section-id=\"1a4mx6b\" data-start=\"1790\" data-end=\"1818\">How Serious Is Code P0072<\/h2>\n<p data-start=\"1820\" data-end=\"1890\">The <strong data-start=\"1824\" data-end=\"1838\">P0072 code<\/strong> is generally considered a <strong data-start=\"1865\" data-end=\"1889\">low severity problem<\/strong>.<\/p>\n<p data-start=\"1892\" data-end=\"1972\">The vehicle will usually continue to operate normally, but the issue may affect:<\/p>\n<ul data-start=\"1974\" data-end=\"2072\">\n<li data-section-id=\"lc4bgs\" data-start=\"1974\" data-end=\"2004\">\n<p data-start=\"1976\" data-end=\"2004\">outside temperature accuracy<\/p>\n<\/li>\n<li data-section-id=\"k8e8nd\" data-start=\"2005\" data-end=\"2041\">\n<p data-start=\"2007\" data-end=\"2041\">climate control system performance<\/p>\n<\/li>\n<li data-section-id=\"sm750s\" data-start=\"2042\" data-end=\"2072\">\n<p data-start=\"2044\" data-end=\"2072\"><a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/common-winter-car-starting-mistakes\/\">cold start<\/a> fuel calculations<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2074\" data-end=\"2162\">While it is not critical, repairing the problem ensures proper vehicle system operation.<\/p>\n<hr data-start=\"2164\" data-end=\"2167\" \/>\n<h2 data-section-id=\"16vvc7e\" data-start=\"2169\" data-end=\"2198\">How to Diagnose Code P0072<\/h2>\n<p data-start=\"2200\" data-end=\"2239\">Diagnosis usually involves these steps:<\/p>\n<ol data-start=\"2241\" data-end=\"2488\">\n<li data-section-id=\"u3b30w\" data-start=\"2241\" data-end=\"2286\">\n<p data-start=\"2244\" data-end=\"2286\">Scan the vehicle using an <strong data-start=\"2270\" data-end=\"2286\"><a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/p0229-code-throttle-pedal-position-sensor-c-intermittent\/\">OBD2<\/a> scanner<\/strong><\/p>\n<\/li>\n<li data-section-id=\"al5e6f\" data-start=\"2287\" data-end=\"2345\">\n<p data-start=\"2290\" data-end=\"2345\">Check live data for the ambient air temperature reading<\/p>\n<\/li>\n<li data-section-id=\"3y3xkh\" data-start=\"2346\" data-end=\"2378\">\n<p data-start=\"2349\" data-end=\"2378\">Inspect the sensor for damage<\/p>\n<\/li>\n<li data-section-id=\"1qi3qoe\" data-start=\"2379\" data-end=\"2409\">\n<p data-start=\"2382\" data-end=\"2409\">Check wiring and connectors<\/p>\n<\/li>\n<li data-section-id=\"198nmj6\" data-start=\"2410\" data-end=\"2456\">\n<p data-start=\"2413\" data-end=\"2456\">Measure sensor resistance with a multimeter<\/p>\n<\/li>\n<li data-section-id=\"18tf0j4\" data-start=\"2457\" data-end=\"2488\">\n<p data-start=\"2460\" data-end=\"2488\">Verify ECU reference voltage<\/p>\n<\/li>\n<\/ol>\n<p data-start=\"2490\" data-end=\"2593\">If the temperature reading remains fixed at <strong data-start=\"2534\" data-end=\"2553\">very low values<\/strong>, the sensor or wiring is likely faulty.<\/p>\n<hr data-start=\"2595\" data-end=\"2598\" \/>\n<h2 data-section-id=\"fx0mch\" data-start=\"2600\" data-end=\"2624\">How to Fix Code P0072<\/h2>\n<p data-start=\"2626\" data-end=\"2660\">Possible repair solutions include:<\/p>\n<ul data-start=\"2662\" data-end=\"2857\">\n<li data-section-id=\"v0n2ow\" data-start=\"2662\" data-end=\"2712\">\n<p data-start=\"2664\" data-end=\"2712\">replacing the <strong data-start=\"2678\" data-end=\"2712\">ambient air temperature sensor<\/strong><\/p>\n<\/li>\n<li data-section-id=\"1t65ol2\" data-start=\"2713\" data-end=\"2739\">\n<p data-start=\"2715\" data-end=\"2739\">repairing damaged wiring<\/p>\n<\/li>\n<li data-section-id=\"1qm3nu7\" data-start=\"2740\" data-end=\"2783\">\n<p data-start=\"2742\" data-end=\"2783\">cleaning or replacing corroded connectors<\/p>\n<\/li>\n<li data-section-id=\"ss61my\" data-start=\"2784\" data-end=\"2817\">\n<p data-start=\"2786\" data-end=\"2817\">securing loose wiring harnesses<\/p>\n<\/li>\n<li data-section-id=\"1flwen9\" data-start=\"2818\" data-end=\"2857\">\n<p data-start=\"2820\" data-end=\"2857\">clearing the fault code after repairs<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2859\" data-end=\"2932\">In most vehicles, replacing the sensor is a quick and inexpensive repair.<\/p>\n<hr data-start=\"2934\" data-end=\"2937\" \/>\n<h2 data-section-id=\"1h0fqcq\" data-start=\"2939\" data-end=\"2977\">Vehicles Commonly Affected by P0072<\/h2>\n<p data-start=\"2979\" data-end=\"3045\">The <strong data-start=\"2983\" data-end=\"3005\">P0072 trouble code<\/strong> can appear on many vehicles, including:<\/p>\n<ul data-start=\"3047\" data-end=\"3128\">\n<li data-section-id=\"1j44rdj\" data-start=\"3047\" data-end=\"3053\">\n<p data-start=\"3049\" data-end=\"3053\">Ford<\/p>\n<\/li>\n<li data-section-id=\"1w650w\" data-start=\"3054\" data-end=\"3065\">\n<p data-start=\"3056\" data-end=\"3065\">Chevrolet<\/p>\n<\/li>\n<li data-section-id=\"fmplfj\" data-start=\"3066\" data-end=\"3078\">\n<p data-start=\"3068\" data-end=\"3078\">Volkswagen<\/p>\n<\/li>\n<li data-section-id=\"1o4g0g\" data-start=\"3079\" data-end=\"3084\">\n<p data-start=\"3081\" data-end=\"3084\"><a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/bmw-art-car-world-tour-expands-to-romania\/\">BMW<\/a><\/p>\n<\/li>\n<li data-section-id=\"1ht5i9k\" data-start=\"3085\" data-end=\"3100\">\n<p data-start=\"3087\" data-end=\"3100\">Mercedes-Benz<\/p>\n<\/li>\n<li data-section-id=\"5hxn74\" data-start=\"3101\" data-end=\"3109\">\n<p data-start=\"3103\" data-end=\"3109\">Toyota<\/p>\n<\/li>\n<li data-section-id=\"y0qgha\" data-start=\"3110\" data-end=\"3119\">\n<p data-start=\"3112\" data-end=\"3119\">Hyundai<\/p>\n<\/li>\n<li data-section-id=\"1t8qgjk\" data-start=\"3120\" data-end=\"3128\">\n<p data-start=\"3122\" data-end=\"3128\">Nissan<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"3130\" data-end=\"3235\">Any modern vehicle equipped with an <strong data-start=\"3166\" data-end=\"3200\">ambient air temperature sensor<\/strong> can potentially trigger this code.<\/p>\n<hr data-start=\"3237\" data-end=\"3240\" \/>\n<h2 data-section-id=\"hjzeqg\" data-start=\"3242\" data-end=\"3261\">FAQ \u2013 P0072 Code<\/h2>\n<h3 data-section-id=\"1kzb8qy\" data-start=\"3263\" data-end=\"3295\">Can I drive with code P0072?<\/h3>\n<p data-start=\"3297\" data-end=\"3402\">Yes. The vehicle can usually be driven safely, although the outside temperature reading may be incorrect.<\/p>\n<h3 data-section-id=\"v3tcau\" data-start=\"3404\" data-end=\"3442\">Why does the dashboard show -40\u00b0C?<\/h3>\n<p data-start=\"3444\" data-end=\"3600\">This often happens when the ambient air temperature sensor circuit reports a <strong data-start=\"3521\" data-end=\"3543\"><a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/obd2-winter-codes-what-they-mean-and-why-they-appear\/\">low voltage<\/a> signal<\/strong>, which the ECU interprets as extremely <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/common-winter-car-starting-mistakes\/\">cold<\/a> temperature.<\/p>\n<h3 data-section-id=\"jnmoml\" data-start=\"3602\" data-end=\"3654\">Is the ambient air temperature sensor expensive?<\/h3>\n<p data-start=\"3656\" data-end=\"3734\">No. In most vehicles the sensor is inexpensive and relatively easy to replace.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The P0072 diagnostic trouble code (DTC) indicates that the ambient air temperature sensor circuit is reporting a low voltage signal to the engine control unit (ECU). The ambient air temperature (AAT) sensor measures the outside air temperature and sends this information to the ECU. The ECU uses this data for: engine management adjustments cold start [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":10039,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[45415],"tags":[36299,36841,41073,36339,45999,46039,46001,45463,46037,46005,42874],"class_list":["post-39780","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-obd2-en","tag-bam","tag-car-diagnostics","tag-check-engine","tag-diagnoza","tag-engine-codes","tag-engine-fault-code","tag-obd2","tag-obd2-code","tag-p0072","tag-powertrain","tag-vehicle-diagnostics"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.2 (Yoast SEO v27.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>P0072 Code \u2013 Ambient Air Temperature Sensor Circuit Low - Diagnoza BAM<\/title>\n<meta name=\"description\" content=\"P0072 code indicates a fault in the monitored system. 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The Intake Air Temperature (IAT) sensor measures the temperature of the air entering the engine. This information helps the ECU adjust: fuel injection quantity\u2026","rel":"","context":"\u00cen \u201eOBD2-EN\u201d","block_context":{"text":"OBD2-EN","link":"https:\/\/diagnozabam.ro\/sfaturi\/category\/obd2-en\/"},"img":{"alt_text":"lista completa coduri de eroare opel astra h zafira b td cdti mfrh original","src":"https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2024\/02\/lista-completa-coduri-de-eroare-opel-astra-h-zafira-b-td-cdti-mfrh-original.webp?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":39777,"url":"https:\/\/diagnozabam.ro\/sfaturi\/blog\/p0071-code-ambient-air-temperature-sensor\/","url_meta":{"origin":39780,"position":4},"title":"P0071 Code \u2013 Ambient Air Temperature Sensor","author":"Bejenaru Alexandru Ionut","date":"25 martie 2026","format":false,"excerpt":"The P0071 diagnostic trouble code (DTC) indicates that the ambient air temperature sensor is sending values that are outside the expected range or behaving inconsistently. The ambient air temperature sensor (AAT) measures the temperature of the air outside the vehicle and sends this data to the engine control unit (ECU)\u2026","rel":"","context":"\u00cen \u201eOBD2-EN\u201d","block_context":{"text":"OBD2-EN","link":"https:\/\/diagnozabam.ro\/sfaturi\/category\/obd2-en\/"},"img":{"alt_text":"lista completa coduri de eroare opel astra h zafira b td cdti mfrh original","src":"https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2024\/02\/lista-completa-coduri-de-eroare-opel-astra-h-zafira-b-td-cdti-mfrh-original.webp?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":39820,"url":"https:\/\/diagnozabam.ro\/sfaturi\/blog\/p0095-code-intake-air-temperature-sensor-2-circuit\/","url_meta":{"origin":39780,"position":5},"title":"P0095 Code \u2013 Intake Air Temperature Sensor 2 Circuit","author":"Bejenaru Alexandru Ionut","date":"26 martie 2026","format":false,"excerpt":"The P0095 OBD2 trouble code indicates that the Engine Control Unit (ECU) has detected a malfunction in the Intake Air Temperature Sensor 2 circuit. Many modern engines use multiple temperature sensors to accurately measure the temperature of air entering the engine. The IAT Sensor 2 provides important information that helps\u2026","rel":"","context":"\u00cen \u201eOBD2-EN\u201d","block_context":{"text":"OBD2-EN","link":"https:\/\/diagnozabam.ro\/sfaturi\/category\/obd2-en\/"},"img":{"alt_text":"lista completa coduri de eroare opel astra h zafira b td cdti mfrh original","src":"https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2024\/02\/lista-completa-coduri-de-eroare-opel-astra-h-zafira-b-td-cdti-mfrh-original.webp?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]}],"jetpack_likes_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/pf97go-alC","jetpack_sharing_enabled":true,"pll_sync_post":[],"_links":{"self":[{"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/posts\/39780","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/comments?post=39780"}],"version-history":[{"count":1,"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/posts\/39780\/revisions"}],"predecessor-version":[{"id":39781,"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/posts\/39780\/revisions\/39781"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/media\/10039"}],"wp:attachment":[{"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/media?parent=39780"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/categories?post=39780"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/tags?post=39780"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}